Stop mechanism for looms



E. F. BUSINGER. STOP MECHANISM FOR LOOMS.

APPLICATION FILED MAY 3. I920.

' Patented Dec. 28, 1920.

L36SAQ,

3 SHEETS-SHEET 1.

a e a u a n E. F..BUS|NGER.

STOP MECHANISM FOR LOOMS.

APPLICATION FILED MAY 8. 1920.

Patented Dec. 28, 1920.

3 SHEETSSHEET 2.

E F. BUSINGER.

STOP MECHANISM FOR LOOMS.

APPL'ICATIONFILED MAY 8, 1920.

1 63,492, Patented Dec 28,, 192%,

3 SHEETS-SHEET 3.

EMIL F. BUSINGER, OF NEW YORK, N. Y.

S1 0? MECHANISM FOR LOOMS.

Specification of Letters Patent.

Patented Dec, 28, 192&

Application filed May 8, 1920. Serial No. 379,710.

To all 1071077107; may concern:

Be it known that I, EMIL F. BUsINonn, a citizen of the United States,residing at the borough of the Bronx, city of New York, county of Bronx,and State of New York, have invented a new and useful Improve ment inStop Mechanism for Looms, of which the following is a specification.

This invention relates to stop mechanisms for looms, particularly loomsusing dropbox or shuttle-lifting mechanism for weaving in colors, andwhich employ a jacquard mechanism, dobby heads or cams to con trol thepattern.

It is well known that severe damage and loss of time and material areapt to result from continued running of the loom when its mechanismfails to function properly, and this is particularly the case withrespect to Jacquard looms which employ drop-box or shuttle-liftingmechanism for weaving varicolored patterns. Continued running of theselooms when the pattern controlling mechanism fails to synchronize withthe drop-box or shuttle-raising mechanism is apt to result in breakingthe shuttles, smashing out the threads, tangling the threads in themachinery, breaking the shuttle rack and pinions or cause the wrongcolor weft to be woven.

Likewise the above mentioned harm is likely to follow in consequence ofthe break ing of the shuttle-lii cing chains, or, when, for any reason,the shuttles stay improperly in raised position, or when the regulatorneedle of the jacquard fails to enter the hole in the jacquard cardprovided therefor.

To avoid the above damage when the parts of the loom fail to functionproperly, it is necessary to stop the loom without delay, and for thispurpose an operator is usually relied upon to watch the loom carefullyand stop the loom manually whenever anything goes wrong.

()ne of the objects of this invention is to provide a stop mechanism forlooms, whereby the loom will be automatically and promptly stoppedwhenever the patterncontrolling mechanism fails to synchronize with thedrop-box or shuttle-lifting mechanism.

Another object of this invention is to provide means adapted toautomatically and promptly stop the loom whenever the shuttle-beamlifting chains break, or whenever the shuttle-beam stays improperly inraised position, or whenever the regulator needle of the jacquard failsto enter its hole in the jacquard card.

A further object is to provide simple and efliclent means forautomatically stopping a loom whenever the ground weft or proper "colorweft is not woven at the proper time.

A further object of the invention is to provide simple, inexpensive andefiicient automatic stop mechanism for looms, and one which may bereadily mounted on a loom without interfering with or requiring severestructural alterations of the loom parts, and one which is sure andpositive in operation, and at the same time does not interfere with theusual manually actuated means for starting and stopping the loom.

Other objects will he in part obvious and in part pointed outhereinafter.

While the invention may be applied to looms employed for weaving eitherwide or narrow fabrics and in which the pattern is controlled by camlevers, dobby heads or jacquards, the present embodiment has beenillustrated in connection with a typical narrow-ware loom such as thatshown in the patent to O. W. Schaum, No. 7 86,237 of March 28, 1905, towhich reference may be had. for a more complete showing of certain wellknown elements of the loom mechanism which form no part of this invention.

In the accompanying drawings,

Figure 1 is a side view of a loom with the stop mechanism mountedthereon and showing above in diagrammatic perspective the method ofconnecting the stop mechanism with a jacquard mechanism forming part ofthe loom;

Fig. 2 is a front view of a portion of the loom;

Fig. 3 is a section of part of the stop mechanism on the line 3-3 ofFig. 1;

Fig. a is a sectional view on the line H of Fig. 1;

Fig. 5 is a perspective view of one possible method of connecting thestop mechanism with a beltshifting arm of the loom; and

Fig. 6 is a sectional view of Fig. a on the line 66.

Similar reference characters refer to similar parts throughout theseveral views of the drawings, in which-- 1 represents a narrow-wareJacquard loom of usual construction adapted to weave varicolored figuredcloth by the insertion in predetermined sequence of wefts of differentcolors, and comprises the usual frame 2, fixed driving pulley 3, loosepulley i and belt-shifting arm 5 adapted to be moved and thereby shiftdriving belt 6 from one pulley to the other to effect the starting orstepping of the loom. Rock arms 7 carry the usuallay beam 32, which asusual is rocked in responseto the rotation of the shaft, gear wheel 10and the consequent to-and-fro movement of the link 11 connected thereto.Two. transverse shuttle-beams 3 re spaced apart, as by vertical bars 36,and carry the usual shuttle blocks and shuttles of which two banks areshown. The beams S are movably secured to rigid upward extensions 33onthe lay. beam so as to rock to-and-fro therewith butto be capable ofvertical movement relative to the latter sufficient to bring one orother of the several banks of shuttles into the plane of the shedsformed as usual in the weft threads between the shuttle-carrying blocks.Any suitable means, such as bell crank levers 35 (of which one is shown)are provided for moving the shuttle-beams andshuttles into predeterminedpositions in response to movement of the usual color regulating needlesof a jacquard mechanism to .causethe ground weft or the proper colorweft to be woven in predetermined sequence.

The drawings show a jacquard mechanism which may beof usual type and isadapted to govern a two shuttle weft, having a regulator needle 9adapted to enter regulator hole 10 whenever it appears in a card of thejacquard-card train. As usual, this needle is adapted to cooperate witha jacquard hook 11 adapted to be raised by a knife 12 whenever theneedle 9. enters a regulator hole, and governs the pick mechanism tocause a pick to be taken whenever the needle 9 fails to enter a hole-1Oin card and not otherwise. This hole 10 appears only in the figure orcolor cards, as is usual.

The stop mechanism comprises a member or bar 13 pivotally connected atone end, as at 14:, to one arm 15 of a bell crank lever pivotallymounted on;the loom frame 2, as at 16, the other arm 17 of said leverengaging beltshifter. 5 through a pivotally connected member 18., sothat horizontal movement ofmember 13 toward the left (Fig. 1) will causethe belt 6 to be shifted onto the loose. pulley 4 and effect thestopping of the loom. Member 13 is supported near i s outer enchasat 19,by an attached cord or wire 20 leading over a pulley 21 mounted on abracket 34 carried by lay 32, the wire 20 being fastened to beam 8, asat 22, so that whenever thebeam is raised, member 13 will.

fall, and, whenever, the beam is lowered,

member 13 will rise. A pusher member or bar;23.1s;p1v0tally,mounted nearone end on irocliiarmz7, as M23, and issupported at its other end by asecond cord or wire 25 attached to jacquard book 11, so that member 23will be raised'whenever regulator needle 9 enters a hole in the jacquardcard, and will be lowered from that position when needle 9 does notenter a hole in the card.

From the above it is evident that, wnenever regulator needle 9 enters ahole in the jacquard card, shuttle-beam 8 lowers, there by raisingmember 13, and simultaneously member will also, be raised by means ofwire 25. Also, member 23 will partake of oscillating movement with rockarms 7, while member 13 will normally remain-horizontally stationary.The stop mechanism is so arranged that whenever the above describedsimultaneous vertical movement of members 13 and 23 fails, the movementof bar 23 toward the'left in Fig. 1 will cause member 13 to be moved tothe left, and thus automatically effect a stopping of the loom.

Means for accomplishing this result comprise a depending lug 26 fastenedto member 13, as at 27, and a lug or projection 28, formed oi"mounted onmember 23, adapted to move in and out of a recess '29 formed in member26, when the loom is running in normal condition and so long as members13 and 23 move vertically in synchronism. The outer-end of bar 13 ridesbetween the two vertical prongs of a guide fork 37 mounted on bar 23,which fork maintains the proper lateral relationship between bars 13 and23 during their travel. When members 13 and 23 do not move vertically insynchronism, lug 28 is adapted to engage a surface 30 or a surface 31formed on lug 26, in which event movement of bar 23 to the left willeffect the stopping of the loom as above described. lVhen the jacquardmech anism does not synchronize with the shuttle lifting and loweringmechanism, projection 28 is adapted to strike one of these surfaces or31 and effect the stopping of the loom. lVhenever the jacquard needle 9fails to enter a hole at the proper time but the beam 8 lowers,projection28 will engage surface 31 and causethe loom to stop; and,again, whenever the regulator needle 9 enters a hole in a card but forany reason beam 3 does not lower, projection 28 will. engage surface 30of. lug 26 and cause the loom to stop. Also, when the shuttle-liftingchains break and the shuttle-beam stays lowered, while the jacquardmechanism operates for raised shuttles, projection 28 will engagesurface 31 of lug 26 to stop the loom.

It isapparent from the above that this device may be installed upon anyone of a number of varieties of looms and irrespective of the number ofcolors or shuttles with which the loom is designed to operate. When morethan two banks of shuttlesare used, the recess29 in lug 26 should bemade sufficiently wide to allow-for the-proper positioning of theshuttles without actuating the stop mechanism. It is understood that theparts should be adjusted according to the particular extent of drop ofthe shuttlebeam, the rise of the jacquard hook being practically thesame in all looms.

It is understood that many changes and embodiments of this invention maybe made without departing from the spirit and scope thereof.

I claim:

1. In a loom, the combination with means for starting and stopping theoperation thereof, a pattern controlling mechanism, a plurality ofshuttles, a mechanism for raising and lowering said shuttles, saidmechanisms cooperating to produce a given design, a lay, and means forrocking said lay; of two movable members, means for moving one of saidmembers in one direction in response to the operation of said patterncontrolling mechanism, means for moving the other of said members in onedirection in response to the raising and lowering of said shuttles, andmeans responsive to the rocking of said lay for moving one of saidmembers in a different direction into engagement with the other of saidmembers to move said last mentioned member in a different direction tooperate said loom stopping means whenever the cooperative relationshipbetween said mechanisms is destroyed.

2. In a loom, in combination, shuttle carrying means, means to rock saidshuttle carrying means, means to raise and lower said shuttle carryingmeans, a acquard mechanism adapted to synchronize with said secondmentioned means, a movable member, means adapted to impart predeterminedmovement to said member in response to rocking movement of said shuttlecarrying means, means to impart a diiferent predetermined movement tosaid member in response to movement of said jacquard mechanism, a secondmovable member, means to impart predetermined movement to said secondmember in response to the raising and lowering of said shuttle carryingmeans, and means adapted upon predeterminedrelative movement of saidmovable members to stop the loom.

3. In a loom, in combination, a shuttlebeam, means adapted to raise andlower said shuttle-beam, a aequard mechanism adapted to operate insynchronism with said shuttle-beam operating means, means for stoppingthe loom upon failure of said means to synchronize with said mechanism,comprising a pair of independently movable members adapted to move insynchronism while said means and mechanism operate in synchronism, saidsynchronism being adapted to be destroyed upon failure of synchronism ofsaid means and mechanism, where by relative movement of said memberseifects the stopping of said loom.

4c. In a loom, in combination, a shuttle beam, means adapted to raiseand lower said shuttle-beam at predetermined times, a jacquard mechanismadapted to govern the raising and lowering of said shuttle-beam, a stopmechanism comprising a member movable in a predetermined manner inresponse to said jacquard mechanism and movable in another predeterminedmanner in response to rocking movement of said shuttle-beam, and asecond member movable in a predeter mined manner in response to theraising and lowering of said shuttle-beam and adapted to be engaged andmoved by said first movable member upon the failure of said jacquardmechanism to properly govern the means for raising and lowering theshuttle-beam, and means whereby the last mentioned movement-of saidsecond member effects the stopping of said loom.

A stop mechanism for looms, comprising, in combination, a movable memberadapted to be mounted on and be movable with the rock arm of a loom andadapted to be connected with a jacquard mechanism to partake ofpredetermined movement with the movement of a acquard hook, a secondmovable member adapted to be mounted on said loom and to be movable in apredetermined manner in response to the raising and lowering of theshuttle-beam and to be connected with the belt shifting arm of said loomwhereby its movement in a predetermined direction effects the stoppingof said loom, said two movable members being adapted to cooperate topermit the continued running of the loom when the acquard mechanismproperly synchronizes with the shuttle raising mechanism, but to efl'ecta stopping of the loom whenever said jacquard mechanism fails tosynchronize with the raising and lowering of the shuttles.

Signed at New York city, N. Y., this 7th day of May, 1920.

EMIL F. BUSINGER.

